bundles/org.eclipse.rap.demo/src/org/eclipse/rap/demo/DemoTreeViewPart.java - rap/org.eclipse.rap - Git at Google

 /*******************************************************************************
  * Copyright (c) 2002, 2012 Innoopract Informationssysteme GmbH and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *    Innoopract Informationssysteme GmbH - initial API and implementation
  *    EclipseSource - ongoing development
  ******************************************************************************/
 package org.eclipse.rap.demo;

 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.*;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.*;
 import org.eclipse.ui.part.ViewPart;
 import org.eclipse.ui.views.properties.*;


 public class DemoTreeViewPart extends ViewPart implements IDoubleClickListener {

   private TreeViewer viewer;
   private IPropertySheetPage propertyPage;

 //  TODO [rst] Add via extension
 //  private final class LeafStarLabelDecorator extends LabelProvider
 //    implements ILabelDecorator
 //  {
 //
 //    public String decorateText( String text, Object element ) {
 //      if( text.startsWith( "Leaf" ) ) {
 //        return text + "*";
 //      }
 //      return text;
 //    }
 //
 //    public Image decorateImage( Image image, Object element ) {
 //      return null;
 //    }
 //  }

   private static final class ViewLabelProvider extends LabelProvider {
     @Override
     public Image getImage( Object element ) {
       IWorkbench workbench = PlatformUI.getWorkbench();
       ISharedImages sharedImages = workbench.getSharedImages();
       return sharedImages.getImage( ISharedImages.IMG_OBJ_ELEMENT );
     }
   }

   class TreeObject implements IPropertySource {
     private static final String PROP_ID_LOCATION = "location";
     private static final String PROP_ID_NAME = "name";
     private String name;
     private String location;
     private TreeParent parent;

     public TreeObject( String name ) {
       this( name, "" );
     }

     public TreeObject( String name, String location ) {
       this.name = name;
       this.location = location;
     }

     public String getName() {
       return name;
     }

     public String getLocation() {
       return location;
     }

     public void setParent( TreeParent parent ) {
       this.parent = parent;
     }

     public TreeParent getParent() {
       return parent;
     }

     @Override
     public String toString() {
       return getName();
     }

     public Object getEditableValue() {
       return this;
     }

     public IPropertyDescriptor[] getPropertyDescriptors() {
       return new IPropertyDescriptor[] {
         new TextPropertyDescriptor( PROP_ID_NAME, "Name" ),
         new TextPropertyDescriptor( PROP_ID_LOCATION, "Location" ),
       };
     }

     public Object getPropertyValue( Object id ) {
       Object result = null;
       if( PROP_ID_NAME.equals( id ) ) {
         result = name;
       } else if( PROP_ID_LOCATION.equals( id ) ) {
         result = location;
       }
       return result;
     }

     public boolean isPropertySet( Object id ) {
       boolean result = false;
       if( PROP_ID_NAME.equals( id ) ) {
         result = name != null && !"".equals( name );
       } else if( PROP_ID_LOCATION.equals( id ) ) {
         result = location != null && !"".equals( location );
       }
       return result;
     }

     public void resetPropertyValue( Object id ) {
       if( PROP_ID_NAME.equals( id ) ) {
         name = "";
       } else if( PROP_ID_LOCATION.equals( id ) ) {
         location = "";
       }
     }

     public void setPropertyValue( Object id, Object value ) {
       if( PROP_ID_NAME.equals( id ) ) {
         name = ( String )value;
       } else if( PROP_ID_LOCATION.equals( id ) ) {
         location = ( String )value;
       }
       update( this );
     }
   }

   /**
    * Instances of this type are decorated with an error marker
    */
   private class BrokenTreeObject extends TreeObject {
     public BrokenTreeObject( String name ) {
       super( name );
     }
   }

   private class TreeParent extends TreeObject {

     private final List<TreeObject> children;

     public TreeParent( String name ) {
       super( name );
       children = new ArrayList<TreeObject>();
     }

     public void addChild( TreeObject child ) {
       children.add( child );
       child.setParent( this );
     }

     public TreeObject[] getChildren() {
       TreeObject[] result = new TreeObject[ children.size() ];
       children.toArray( result );
       return result;
     }

     public boolean hasChildren() {
       return children.size() > 0;
     }
   }
   private final class TreeViewerContentProvider
     implements IStructuredContentProvider, ITreeContentProvider
   {

     private TreeParent invisibleRoot;

     public void inputChanged( Viewer v, Object oldInput, Object newInput ) {
     }

     public void dispose() {
     }

     public Object[] getElements( Object parent ) {
       if( parent instanceof IViewPart ) {
         if( invisibleRoot == null ) {
           initialize();
         }
         return getChildren( invisibleRoot );
       }
       return getChildren( parent );
     }

     public Object getParent( Object child ) {
       if( child instanceof TreeObject ) {
         return ( ( TreeObject )child ).getParent();
       }
       return null;
     }

     public Object[] getChildren( Object parent ) {
       if( parent instanceof TreeParent ) {
         return ( ( TreeParent )parent ).getChildren();
       }
       return new Object[ 0 ];
     }

     public boolean hasChildren( Object parent ) {
       if( parent instanceof TreeParent ) {
         return ( ( TreeParent )parent ).hasChildren();
       }
       return false;
     }

     /*
      * We will set up a dummy model to initialize tree heararchy. In a real
      * code, you will connect to a real model and expose its hierarchy.
      */
     private void initialize() {
       TreeObject to1 = new TreeObject( "EclipseCon location",
                                        "http://maps.google.com/maps?q=5001%20Great%20America%20Pkwy%20Santa%20Clara%20CA%2095054" );
       TreeObject to2 = new TreeObject( "Eclipse Foundation",
                                        "http://maps.google.com/maps?q=Ottawa" );
       TreeObject to3 = new TreeObject( "Innoopract Inc",
                                        "http://maps.google.com/maps?q=Portland" );
       TreeParent p1 = new TreeParent( "Locate in browser view" );
       p1.addChild( to1 );
       p1.addChild( to2 );
       p1.addChild( to3 );
       TreeObject to4 = new BrokenTreeObject( "Leaf 4" );
       TreeParent p2 = new TreeParent( "Parent 2" );
       p2.addChild( to4 );
       TreeParent root = new TreeParent( "Root" );
       TreeParent p3 = new TreeParent( "Child X - filter me!" );
       root.addChild( p1 );
       root.addChild( p2 );
       root.addChild( p3 );
       invisibleRoot = new TreeParent( "" );
       invisibleRoot.addChild( root );
     }
   }

   @Override
   public void createPartControl( Composite parent ) {
     viewer = new TreeViewer( parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL );
     viewer.setContentProvider( new TreeViewerContentProvider() );
     ILabelDecorator labelDecorator
       = PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator();
     ILabelProvider labelProvider
       = new DecoratingLabelProvider( new ViewLabelProvider(), labelDecorator );
     viewer.setLabelProvider( labelProvider );
     viewer.setInput( this );
     viewer.addDoubleClickListener( this );
     getSite().setSelectionProvider( viewer );
   }

   @Override
   public Object getAdapter( Class adapter ) {
     Object result = super.getAdapter( adapter );
     if( adapter == IPropertySheetPage.class ) {
       if( propertyPage == null ) {
         propertyPage = new PropertySheetPage();
       }
       result = propertyPage;
     }
     return result;
   }

   @Override
   public void setFocus() {
     viewer.getTree().setFocus();
   }

   public void doubleClick( DoubleClickEvent event ) {
     String msg = "You doubleclicked on " + event.getSelection().toString();
     Shell shell = viewer.getTree().getShell();
     MessageDialog.openInformation( shell, "Treeviewer", msg );
   }

   private void update( TreeObject treeObject ) {
     getViewer().update( treeObject, null );
   }

   public TreeViewer getViewer() {
     return viewer;
   }
 }
	/*******************************************************************************
	* Copyright (c) 2002, 2012 Innoopract Informationssysteme GmbH and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Innoopract Informationssysteme GmbH - initial API and implementation
	* EclipseSource - ongoing development
	******************************************************************************/
	package org.eclipse.rap.demo;

	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.viewers.*;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.ui.*;
	import org.eclipse.ui.part.ViewPart;
	import org.eclipse.ui.views.properties.*;


	public class DemoTreeViewPart extends ViewPart implements IDoubleClickListener {

	private TreeViewer viewer;
	private IPropertySheetPage propertyPage;

	// TODO [rst] Add via extension
	// private final class LeafStarLabelDecorator extends LabelProvider
	// implements ILabelDecorator
	// {
	//
	// public String decorateText( String text, Object element ) {
	// if( text.startsWith( "Leaf" ) ) {
	// return text + "*";
	// }
	// return text;
	// }
	//
	// public Image decorateImage( Image image, Object element ) {
	// return null;
	// }
	// }

	private static final class ViewLabelProvider extends LabelProvider {
	@Override
	public Image getImage( Object element ) {
	IWorkbench workbench = PlatformUI.getWorkbench();
	ISharedImages sharedImages = workbench.getSharedImages();
	return sharedImages.getImage( ISharedImages.IMG_OBJ_ELEMENT );
	}
	}

	class TreeObject implements IPropertySource {
	private static final String PROP_ID_LOCATION = "location";
	private static final String PROP_ID_NAME = "name";
	private String name;
	private String location;
	private TreeParent parent;

	public TreeObject( String name ) {
	this( name, "" );
	}

	public TreeObject( String name, String location ) {
	this.name = name;
	this.location = location;
	}

	public String getName() {
	return name;
	}

	public String getLocation() {
	return location;
	}

	public void setParent( TreeParent parent ) {
	this.parent = parent;
	}

	public TreeParent getParent() {
	return parent;
	}

	@Override
	public String toString() {
	return getName();
	}

	public Object getEditableValue() {
	return this;
	}

	public IPropertyDescriptor[] getPropertyDescriptors() {
	return new IPropertyDescriptor[] {
	new TextPropertyDescriptor( PROP_ID_NAME, "Name" ),
	new TextPropertyDescriptor( PROP_ID_LOCATION, "Location" ),
	};
	}

	public Object getPropertyValue( Object id ) {
	Object result = null;
	if( PROP_ID_NAME.equals( id ) ) {
	result = name;
	} else if( PROP_ID_LOCATION.equals( id ) ) {
	result = location;
	}
	return result;
	}

	public boolean isPropertySet( Object id ) {
	boolean result = false;
	if( PROP_ID_NAME.equals( id ) ) {
	result = name != null && !"".equals( name );
	} else if( PROP_ID_LOCATION.equals( id ) ) {
	result = location != null && !"".equals( location );
	}
	return result;
	}

	public void resetPropertyValue( Object id ) {
	if( PROP_ID_NAME.equals( id ) ) {
	name = "";
	} else if( PROP_ID_LOCATION.equals( id ) ) {
	location = "";
	}
	}

	public void setPropertyValue( Object id, Object value ) {
	if( PROP_ID_NAME.equals( id ) ) {
	name = ( String )value;
	} else if( PROP_ID_LOCATION.equals( id ) ) {
	location = ( String )value;
	}
	update( this );
	}
	}

	/**
	* Instances of this type are decorated with an error marker
	*/
	private class BrokenTreeObject extends TreeObject {
	public BrokenTreeObject( String name ) {
	super( name );
	}
	}

	private class TreeParent extends TreeObject {

	private final List<TreeObject> children;

	public TreeParent( String name ) {
	super( name );
	children = new ArrayList<TreeObject>();
	}

	public void addChild( TreeObject child ) {
	children.add( child );
	child.setParent( this );
	}

	public TreeObject[] getChildren() {
	TreeObject[] result = new TreeObject[ children.size() ];
	children.toArray( result );
	return result;
	}

	public boolean hasChildren() {
	return children.size() > 0;
	}
	}
	private final class TreeViewerContentProvider
	implements IStructuredContentProvider, ITreeContentProvider
	{

	private TreeParent invisibleRoot;

	public void inputChanged( Viewer v, Object oldInput, Object newInput ) {
	}

	public void dispose() {
	}

	public Object[] getElements( Object parent ) {
	if( parent instanceof IViewPart ) {
	if( invisibleRoot == null ) {
	initialize();
	}
	return getChildren( invisibleRoot );
	}
	return getChildren( parent );
	}

	public Object getParent( Object child ) {
	if( child instanceof TreeObject ) {
	return ( ( TreeObject )child ).getParent();
	}
	return null;
	}

	public Object[] getChildren( Object parent ) {
	if( parent instanceof TreeParent ) {
	return ( ( TreeParent )parent ).getChildren();
	}
	return new Object[ 0 ];
	}

	public boolean hasChildren( Object parent ) {
	if( parent instanceof TreeParent ) {
	return ( ( TreeParent )parent ).hasChildren();
	}
	return false;
	}

	/*
	* We will set up a dummy model to initialize tree heararchy. In a real
	* code, you will connect to a real model and expose its hierarchy.
	*/
	private void initialize() {
	TreeObject to1 = new TreeObject( "EclipseCon location",
	"http://maps.google.com/maps?q=5001%20Great%20America%20Pkwy%20Santa%20Clara%20CA%2095054" );
	TreeObject to2 = new TreeObject( "Eclipse Foundation",
	"http://maps.google.com/maps?q=Ottawa" );
	TreeObject to3 = new TreeObject( "Innoopract Inc",
	"http://maps.google.com/maps?q=Portland" );
	TreeParent p1 = new TreeParent( "Locate in browser view" );
	p1.addChild( to1 );
	p1.addChild( to2 );
	p1.addChild( to3 );
	TreeObject to4 = new BrokenTreeObject( "Leaf 4" );
	TreeParent p2 = new TreeParent( "Parent 2" );
	p2.addChild( to4 );
	TreeParent root = new TreeParent( "Root" );
	TreeParent p3 = new TreeParent( "Child X - filter me!" );
	root.addChild( p1 );
	root.addChild( p2 );
	root.addChild( p3 );
	invisibleRoot = new TreeParent( "" );
	invisibleRoot.addChild( root );
	}
	}

	@Override
	public void createPartControl( Composite parent ) {
	viewer = new TreeViewer( parent, SWT.MULTI \| SWT.H_SCROLL \| SWT.V_SCROLL );
	viewer.setContentProvider( new TreeViewerContentProvider() );
	ILabelDecorator labelDecorator
	= PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator();
	ILabelProvider labelProvider
	= new DecoratingLabelProvider( new ViewLabelProvider(), labelDecorator );
	viewer.setLabelProvider( labelProvider );
	viewer.setInput( this );
	viewer.addDoubleClickListener( this );
	getSite().setSelectionProvider( viewer );
	}

	@Override
	public Object getAdapter( Class adapter ) {
	Object result = super.getAdapter( adapter );
	if( adapter == IPropertySheetPage.class ) {
	if( propertyPage == null ) {
	propertyPage = new PropertySheetPage();
	}
	result = propertyPage;
	}
	return result;
	}

	@Override
	public void setFocus() {
	viewer.getTree().setFocus();
	}

	public void doubleClick( DoubleClickEvent event ) {
	String msg = "You doubleclicked on " + event.getSelection().toString();
	Shell shell = viewer.getTree().getShell();
	MessageDialog.openInformation( shell, "Treeviewer", msg );
	}

	private void update( TreeObject treeObject ) {
	getViewer().update( treeObject, null );
	}

	public TreeViewer getViewer() {
	return viewer;
	}
	}